RESOLVED WORKSFORME266231
iOS 17.2 Fullscreen API - White bars left and right when fullscreen 
https://bugs.webkit.org/show_bug.cgi?id=266231
Summary iOS 17.2 Fullscreen API - White bars left and right when fullscreen
Robert Bryer
Reported 2023-12-11 09:51:04 PST
Created attachment 468976 [details] White bars in landscape fullscreen White bars in the background of fullscreen appear to the left and right when in landscape. I think it is taking this background colour from the page, when I would expect this colour to be black from the user agent stylesheet default: *|*:not(:root):fullscreen::backdrop { background:black; } https://fullscreen.spec.whatwg.org/#user-agent-level-style-sheet-defaults iPhone 13 / iOS 17.2 With the Fullscreen API feature flag turned on: 1. Visit http://cookbook.tools.bbc.co.uk/news?player=toucan 2. Play the video. 3. Go fullscreen and turn it landscape. Screenshot attached.
Attachments
White bars in landscape fullscreen (7.68 MB, image/png)
2023-12-11 09:51 PST, Robert Bryer 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Radar WebKit Bug Importer
Comment 1 2023-12-11 13:35:22 PST
<rdar://problem/119514710>
Frédéric Wang Nélar
Comment 2 2026-10-12 06:11:40 PDT
I tried with iOS simulator (iphone) but don't see any fullscreen button. On ipad, I don't see any left/right white rectangles. I'm closing this bug but feel free to reopen if you still see it.
Frédéric Wang Nélar
Comment 3 2026-10-12 06:21:32 PDT
(In reply to Frédéric Wang Nélar from comment #2) > I tried with iOS simulator (iphone) but don't see any fullscreen button. I'm able to put fullscreen after enabling the fullscreen api, but still can't see the white bars.
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